Have evolutionary algorithms been used for engineering design?
Examples of GA implementations:

NASA’s spacecraft evolved antenna
Solution for TSP with a big number of connections. Here is an example with Python and here with C#.
From my experience, GA can be even used for a training of small artificial neural networks, but with less efficiency than with traditional deep learning approaches

Also, I heard about successful projects with using GA for scheduling, packing and  logistics
Therefore, everything, that can be represented in a form of digital chromosomes (can be serialized to and deserialized  back from a sequence of bits) and we can define a function to evaluate its efficiency – fitness or reward function can be optimized by using of GA